package com.ymq.reggie.controller;

import com.ymq.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.UUID;

@Slf4j
@RestController
@RequestMapping("/common")
public class CommonUploadController {

   @Value("${reggie.path}")
     private   String path;

    @PostMapping("/upload")
    public R<String> upload( MultipartFile file){
        log.info(file.toString());
        //原文件名
        String originalFilename = file.getOriginalFilename();
        //后缀名
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));

        String fileName = UUID.randomUUID().toString()+substring;


        File filepPath = new File(path);

        if(!filepPath.exists()){
            filepPath.mkdirs();
        }
        try {
           file.transferTo(new File(path+fileName));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }


        return R.success(fileName);
    }
    @GetMapping("/download")
    public void download(String name,HttpServletResponse response)  {
        try {
            FileInputStream fileInputStream = new FileInputStream(new File(path+name));
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jepg");

            int len=0;
            byte[] bytes=new byte[1024];
            while ((len=fileInputStream.read(bytes))!=-1){
                outputStream.write(bytes,0,len);
                outputStream.flush();
            }
            outputStream.close();
            fileInputStream.close();

        } catch (Exception e) {
            throw new RuntimeException(e);
        }


    }
}
